Air permeable middle sole of a shoe

ABSTRACT

An air permeable middle sole including a plastic layer and an air permeable woven layer covering up the plastic layer; multiple ventilation pores being consistently disposed in the plastic layer; and multiple grooves being molded among and connecting through those ventilation pore; a wall is disposed to the edge of the plastic layer; a blank edge surrounding pores being disposed on the bottom of the plastic layer to ensure tight adhesion to the insole; grooves being directly in the plastic layer; the woven layer being made of air permeable material to permit vertical air circulation through woven layer and pores; the grooves allowing unobstructed expelling of odor to ambient air; and grooves and pores permitting water containment and sweats built up on the shoe to be expelled in time.

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The present invention is related to a shoe component, and moreparticularly, to an air permeable middle sole.

(b) Description of the Prior Art

Middle soles generally available in the market are usually made ofEthylene-Vinyl Acetate (EVA) or Polyurethane (PU) foamed materials.However, these materials are known for poor air permeability foreffective expelling of sweats and odor that may present in the shoes tocompromise wearing comfort. An improvement disclosed in PRC UtilityPatent No. 98248789.4 under the title of “Footwear with Massage,Drainage, and Air Permeable Functions” teaches a type of middle solethat though provides drainage and air permeable functions is found withcomplicated structure and higher production cost of the shoes.

SUMMARY OF THE INVENTION

The primary purpose of the present invention is to provide a middle solethat is simple in construction and yielding better air permeability tocorrect the problems found with the prior art.

To achieve the purpose, a middle sole of the present invention iscomprised of a plastic layer and an air permeable woven layer. Wherein,multiple ventilation pores are consistently disposed in the plasticlayer and connecting through one another by means of multiple moldedgroves. A blank edge is disposed on the bottom of the plastic layer toensure tight adhesion of the middle sole to the sole of a shoe.

Those grooves include lateral and longitudinal ones with certain portionof those lateral ones penetrating through the blank edge to communicatewith the ambient air. Whereas ventilation pores are directly disposed inthe plastic layer of the middle sole and the woven layer is made of airpermeable fabric, air current in the shoe is allowed verticalventilation through the woven layer and ventilation pores. Grooves tocommunicate with ambient air are disposed to connect ventilation poresfor facilitating air circulation to fully expel odor trapped in theshoe; and similarly, sweats from human body and water containment builtup on the shoe can be drained in time through those grooves and poresdisregarding the fact that the bottom of the plastic layer is adhered tothe sole.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view showing an operating status of a preferredembodiment of the present invention.

FIG. 2 is a rear view of the preferred embodiment of the presentinvention.

FIG. 3 is a perspective view showing a local part of the preferredembodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIGS. 1, 2, and 3, a preferred embodiment of the presentinvention is comprised of a plastic layer 1 and an air permeable wovenlayer 2 on top of the plastic layer 1. The plastic layer 1 is made ofrubber, EVA, PU, PVC, or TPR; and the woven layer 2 is made of plain orprinted fabric including cotton and hempen materials for absorbingsweats and providing good air permeability and drainage. The material ofthe woven layer 2 may be blended or combined with far infrared material,or processed with optical catalyst to further provide antiseptic,deodorizing, and decontamination results.

A blank edge 14 is provided on the bottom of the plastic layer 1surrounding a central area consistently disposed with multipleventilation pores 11 connecting through one another by mans of multiplegrooves. Those multiple grooves are comprised of lateral grooves 12 andlongitudinal grooves 13 with certain portion of those lateral grooves 12penetrating through the edge 14. Accordingly, those multiple ventilationpores 11 are capable of communicating with ambient air to facilitateexpelling air current and water mist through those grooves 12, 13.Furthermore, the depth of each groove 12, 13 is approximately half ofthat of the ventilation pore 11 to guarantee sufficient depth for eachventilation pore 11 and better strength and flexibility of the entireplastic layer 1.

The woven layer 2 is directly fused to the surface of the plastic layer1, and the bottom of the plastic layer 1 is forthwith adhered to a sole3 as illustrated in FIG. 1. The surface area on the woven layer 2 iscorresponding to an area 21 where those ventilation pores 11 arelocated. The air current realizes its ventilation purpose through thearea 21. Disregarding the fact that the plastic layer 1 is adhered tothe sole 3, presence of those lateral and longitudinal grooves 12, 13permits air circulation between the plastic layer 1 and the sole 3 toexpel airflow and air mist into ambient air. Meanwhile, the shoesremains dry and odorless since airflow trapped in the shoes iscontinuously compressed and expelled as the wearer keeps pressing theshoes when he/she is walking.

The prevent invention provides an improved structure of an air permeablemiddle sole, and the application for a utility patent is duly filedaccordingly. However, it is to be noted that the preferred embodimentsdisclosed in the specification and the accompanying drawings are notlimiting the present invention; and that any construction, installation,or characteristics that is same or similar to that of the presentinvention should fall within the scope of the purposes and claims of thepresent invention.

1. An air permeable middle sole including a plastic layer and an airpermeable woven layer covering up the plastic layer; multipleventilation pores being consistently disposed in the plastic layer; andmultiple grooves being molded among and connecting through thoseventilation pores.
 2. The air permeable middle sole as claimed in claim1, wherein a blank edge surrounding the area where multiple ventilationpores are provided is provided on the plastic layer.
 3. The airpermeable middle sole as claimed in claim 1, wherein those groovesinclude lateral ones and longitudinal ones with certain portion of thoselateral grooves passing through the wall.
 4. The air permeable middlesole as claimed in claim 1, wherein those grooves are distributed in areticular pattern.